Answer:

Step-by-step explanation:
Given the expression

now rewriting the expression



Therefore,

1) value of x =60
2) value of x = 3
Step-by-step explanation:
We need to use cross products to solve the proportions of x.

Solving:

So, value of x =60


So, value of x = 3
Keywords: Ratio and Proportions
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Answer:
4% of all adults go to a health club at least twice a week
Step-by-step explanation:
the proportion of adults who belong to health clubs is 10% that is 0.10
the proportion of these adults (health club members) who go to the club at least twice a week is 40%, which is 0.40.
Thus, the proportion of all adults who go to a health club at least twice a week is
0.10 × 0.40 = 0.04, that is 4%
Average rate of change from x = -3 to x = 1 is (f(1) - f(-3))/(1 - (-3)) = (5 - (-3))/(1 + 3) = (5 + 3)/4 = 8/4 = 2