# math

if f(x)= 5x+7 and g(x)=x^2-2 write the functions

a. (fxg)(x)

b. f(g(x))

1. 👍
2. 👎
3. 👁

## Similar Questions

1. ### calculus

Choose any two specific functions (not already chosen by a classmate) that have inverses. Use your chosen functions to answer any one of the following questions: If the inverses of two functions are both functions, will the

2. ### Algebra

Use composition of functions to show that the functions f(x) = 5x + 7 and g(x)= 1/5x-7/5 are inverse functions. That is, carefully show that (fog)(x)= x and (gof)(x)= x.

3. ### Calculus

In order to express the function y=12^19x+7 as a composition of two functions the outer of which is an exponential function,we would let u be equal to the inner function, u=19x+7, and then write y as a function of u, as follows:

4. ### Trig

The point (1/3,1/4) lies on the terminal side of an angle. Find the exact value of the six trig functions, and explain which functions are reciprocal functions to each other.

1. ### Algebra

Suppose that the functions s and t are defined for all real numbers x as follows s(x) x-4 and t(x)=4x+1 write the expressions for (s•t) and (x) and (s+t) and evaluate (s-t)(-2)

Any short explanation for things I got wrong would be great, too, if possible! Thanks in advanced! :) 8. Which of the following functions grows the fastest? ***b(t)=t^4-3t+9 f(t)=2^t-t^3 h(t)=5^t+t^5 c(t)=sqrt(t^2-5t) d(t)=(1.1)^t

3. ### Math

There are 4 odd functions and 3 even functions in the gallery of the 12 basic functions. After multiplying these functions together pairwise in different combinations and exploring their graphs, make a conjecture about the

4. ### math

f(x) = x^3 and g(x) = 3x-7 If the inverses of two functions are both functions, will the inverse of the composite function made by the original functions also be a function?

1. ### math

Suppose that the functions f and g are defined for all real numbers x as follows.f(x)=x+4,g(x)=3x+2.Write the expressions for(f*g)(x) and (f-g)(x) and evaluate (f+g)(4)

2. ### math-calculus

write the following absolute value functions as piecewise functions. i really not get how to do this f(x) = |x| i think im supposed to state as positive and negative but i not even know what that x means. i only guessing and

3. ### Math

If the inverses of two functions are both functions, will the inverse of the sum or difference of the original functions also be a function? Explain your reasoning.

4. ### math

Suppose that the functions r and s are defined for all real numbers x as follows. r(x)=2x-1 s(x)=6x write the expression for (r*s)(x) and (r-s)(x) and evaluate (r=s)(4)