Answer:
F(-2)=-2²+3(-2)-2=4+-6×-2=4+12=16
The correct simplification of the expression is 9c^2 i think.
The first one is X = 24 & the second one is x= 20
5a.
18/9 = 12/x
18x = 12(9)...cross multiply
18x = 108
x=108/18
x=6
Step1. find the how much he buy he buy 45
step2. find the % the % is 4 move to decimal left 4% which is .04
step3. multilply the how much he buy or the % so this is that 45*.04=1.8
step4. what are they said they said tax is like add so we got 1.8+$45=46.8
so the answer is 46.8
look at what is the step and you understand the problem more easy way.
