Marta's weekly pay for selling large screen televisions is determined by the formula
S= $275 + 80n
where s is her pay in dollars, and n is the number of large televisions she sells that week.
If Marta's pay last week was $835, how many large screen televisions did she sell?
$275 + 80n = $835
275-275 +80n = 835-275
80n = 560
80n/80 = 560/80
n = 7
To find the number of large screen televisions that Marta sold last week, we can use the given information and the formula provided.
Given:
Marta's pay last week = $835
Formula for Marta's weekly pay: S = $275 + 80n
We can set up an equation and solve for n:
$835 = $275 + 80n
Subtract $275 from both sides:
$835 - $275 = 80n
Simplify:
$560 = 80n
Divide both sides by 80:
$560 / 80 = n
Simplify:
7 = n
Marta sold 7 large screen televisions last week.
To find the number of large screen televisions Marta sold, we need to solve the equation S = $835, where S is Marta's pay in dollars and n is the number of large televisions she sells.
The given formula for Marta's pay is S = $275 + 80n. We can substitute the value of $835 for S in this equation:
$835 = $275 + 80n
Now we need to solve this equation for n. Let's start by isolating the term with n on one side:
$835 - $275 = 80n
Simplifying the left side of the equation:
$560 = 80n
To solve for n, we divide both sides of the equation by 80:
n = $560 / 80
Calculating the right side of the equation:
n = 7
Therefore, Marta sold 7 large screen televisions last week.