For four Fridays in June, Grace earned $21.50, $29.75, $32.00, and $15.25 from babysitting. In July, she earned $8 more for babysitting four Fridays than she did in June.

What is the increase in the mean for July compared to June?

Round the answer to the nearest penny.

Enter your answer in the box.

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the answer is 2/54

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a