7) John bought I pineapple, 1 bag of cherries and 3 watermelons at a fruit stand. The
pineapple cost $2.80, the bag of cherries cost $3.90 and the watermelons were each $1.80.
If he paid with a twenty dollar bill, how much change should he get back?

Will give brainliest series to sigma notation write the following series in sigma notation. 6+10+14+18+22+26+30 example image shown below.

What is 1/2 x (6 x 4)+3 + 2 show your work

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x