Answer: D. 7
Explanation:
If Kendrick wears his lucky sneakers and wins 70% of all the races he enters, then he must win 70% of the 10 races.
To find 70% of 10, first convert 70% to a decimal by dividing by 100 (same as moving the decimal point two places to the left.
You end up with 0.7.
Then multiply the decimal by 10 to find out how many races he will win.
0.7 x 10 = 7