Last month the cost of using the air pump at a garage was 20p. This month the cost of using the air pump is 50p.
Tom says,
“50 = 20 = 2.5 so the cost of using the air pump has increased by 250%"
Is Tom correct?
Explain your answer.

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules