Where do i put grouping symbols in the problem 3^3 - 9×2+1=8

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need