Answer:
Audrey can afford 4 hours of lesson.
Step-by-step explanation:
Given that:
Amount Audrey has to spend = $111
Cost of racket = $55
Cost per lesson = $14
Let,
y be the total cost
x be the number of hours
According to given statement;
y = 14x + 55
111 = 14x + 55
111 - 55 = 14x
14x = 56
Dividing both sides by 14

Hence,
Audrey can afford 4 hours of lesson.
Answer:
-212.5
Step-by-step explanation:
-212.5 x 0.4 = -85
Answer:
y•y-y•y•y•y
Step-by-step explanation:
y^2 is equal to y•y and y^4 is equal to y•y•y•y.
Let's take a look at the exponent rule:

Her mistake was she multiplied the exponents instead of adding it up.
You just add up all of the x times by 457, since you combine like terms.