Which statements correctly use the properties of exponents to simplify? check all that apply. (xy2)2 = x2y4 x3x3 = x6 3y–2 = 2(x2)3 = 8x6 –x2(–x3) = –x6

Which expression represent a number that is one fourth as great as 10-2a. (10-2)+4b. (10-2)÷4c. (10-2)-4d. (10-2)×4

For a school science project, john noted the temperature at the same time every day for one week. the high temperature for the week was 27°f, and the low temperature for the week was −3°f. what is the difference between the high and low temperatures john recorded?

Tony is pouring milk for student lunches. she knows that 3 quarts of milk contain 12 cups. how many cups can she pour with 7 quarts of milk? how many quarts will she need to pour 10 cups of milk?