Symbol used to represent unknown numbers or values

What is an index of an array? what are legal index values?

Mary earned $345 babysitting in June. In July she earned $209, and she earned $198 in August. How much more did she earn in July and August than in June?

2. Apply the rules for order of operations to simplify 2 + 3 - 4 + (5 x 4). O A. 9 O B. 24 OC. 22 O D. 21

if the length of a rectangle is increased by 30% and the width of the same rectangle is decreased by 30% what is the effect on the area of the rectangle? It is increased by 60% it is unchanged it is decreased by 15% it is decreased by 9%

Steve and Chris are working together to weed a garden plot. Steve weeded of the plot. Chris weeded of the plot. Which statement is true? A. Steve and Chris weeded areas that are equal in size . B. Steve weeded a greater area than Chris weeded. C.

It took the Farhats 85 minutes to drive 102 miles. If they this same driving rate, how long will it take them (in minu get to their vacation home that is 306 miles away

Simplify (4-8i) (2-7i)

Kira is a high school student who is also taking a class at her local community college. Kira rides the bus from the high school to the college, which are shown 1 inch apart on a map. The map uses a scale of 2 inches : 7.4 miles.

Identity function f (x) = c

A teenager consumes 20% of her calores each day in the form of protein. If she is getting 700 calories a day for protein, how many calories is she consuming per day?