F(-3) = -2(-3) + 3
f(-3) = 6 + 3
f(-3) = 9
answer
<span>b. 9</span>
Let his total money be x.
He spent (3/7)*x of his money.
He gave 1/4(x-3/7x) to his sister.
which is : (1/4)*(4/7)*x = (1/7)*x
Now,
How much money he have in the beginning =
(3/7)*x+(1/7)*x+120=x
(4/7)*x+120=x
120=x-(4/7)*x
120=(3/7)*x
x=120*7/3 [cross multiplication]
x=280.
So, Alex had $280 in the beginning.
Answer:
A. 5
Step-by-step explanation:
because 13 is the hypotenuse and 8 is the sine
