Find the percent decrease. Last year I sent out 120 invitations to a summer party
and this year I only sent out 90 invitations.

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2

the answer is 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

what level of math? also i don't need to be paid if i can you.