Your answer is C.The relation passed the vertical line test.
Step-by-step explanation:
a) sample space = 10
I.e the total number of possible outcomes
b) A = {7,8,9,10 }
B = {4,9
c) A U B = {4,7,8,9,10}
d) pr (A) = no of events in A÷ total sample space
pr (A) = 4/10
=2/10
e) pr( A U B) = 5/ 10
= ½
8.5x + 55 = 123
You would use the formula: mx + b = y
The slope is the amount of money each day(mx),and the y-intercept would be the fee(b) and the total cost would be y.
Move down c units means minus 2 from whole function
f(x) moved down 2 units means f(x)-2
so
f(x)-2=2x²-8-2
f(x)-2=2x²-10
g(x)=2x²-10