Answer: D
Step-by-step explanation:
because 7x7= 49
Answer:
A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. ... When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.
Step-by-step explanation:
The explicit rule is an = a1 + 12 * (n - 1).
From the recursive rule, we can tell that each term is 12 more than the previous term, so we can write a1 + 12 * n.
However, if that's the rule, then when a1 is plugged in, it doesn't work. So, we must do 12 * (n - 1) to make it work.
Therefore, the explicit rule is:
an = a1 + 12 * (n - 1).