The sum of a number and ten is eighteen. What is the number? Which statements are true? Check all that apply.
The words “a number” are represented by the variable, n, as the unknown value.
The unknown number and 10 together make 18.
9 + 9 = 18
8 + 10 = 18
n = 8

9 + 9 = 18, 8 + 10 = 18, n = 8 are all correct, but if you want the value of n its 8.

Step-by-step explanation:

8 + 10 = 18

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  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).

you never say the total so we cant find the percentage used for petrol

step-by-step explanation: