7. A small child came across a pile of pebbles while playing in a park. He decided to make a design by lining up the pebbles in rows. The first row
had 7 pebbles. Each row had 4 more pebbles than the previous row. If the
child made 15 rows, what is the total number of pebbles in the design?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

X-10/4 when x = –18 a 7 b –2 c –7 d 2

Written as a simplified polynomial in standard form, what is the result when (2x+8)^2(2x+8) 2 is subtracted from 8x^2-38x 2 −3?