B is the answer. I just went over this like five minutes ago.
Hope this helps!
Answer:
Step-by-step explanation:
f(x) = 2x - 3
f(-9)= 2(-9) - 3 = -18 - 3 = -21
f(-3) = 2(-3) - 1 = -6 - 1 = -7
f(1)= 2(1) - 3 = 2 - 3 = -1
6x - y = 31 so y = 6x - 31
substitute y = 6x - 31 into 3x + 7y = 8
3x + 7y = 8
3x + 7(6x - 31) = 8
3x + 42x -217 = 8
45x = 225
x = 5
y = 6x - 31
y = 6(5) - 31
y = 30 - 31
y = -1
answer
x = 5 and y = -1
Answer:
b.
Step-by-step explanation:
cause 18/100 is 0.18, I don't really know how to explain it, I just know that if the percentage is one digit then it will be 0.02 (2 is for example) and if it's two digits it will be 0.21
12 x 5 = 60 so The cost of 60 oranges is $6.00.