Which of the following answers gives the best estimate for x given this following equation? 21x+1,998=2,243. 100, 1,000, 10, or 1
To find the best estimate for x, we need to solve the equation: 21x + 1,998 = 2,243.
When we isolate x by subtracting 1,998 from both sides of the equation, we get:
21x = 2,243 - 1,998
21x = 245
Dividing both sides of the equation by 21, we find the value of x:
x = 245/21
Simplifying the fraction, we have:
x ≈ 11.67
Therefore, the best estimate for x is 10.