Answer:
27
Step-by-step explanation:
substitute x = - 3, a = - 5 into the expression
- 4x - 3a
= - 4(- 3) - 3(- 5)
= 12 + 15
= 27
F(x)=2x+3
assuming the problem is 4 times 2 minus 2x plus 1
you add like variables
180 is the speed of the motorboat. I don't know the speed of the current.
........................................
120÷4=30
30×6=180
A =(b x h)/2
= 10 x 8
= 80/2
= 40 mm square
Cut 25 with 5
5x3 = 15
15 = 15
