The answer is $328,000. Since the investment is $82,000 every seven years, and there is 28 years. If you divide 28 by 7 you get 4. Then you multiply 82,000 by 4 to get your answer : $328,000.
Yes. the hundred thousands are greater than the ten thousands.
29.) This is simply interpreting the linear function.
The function:
96+2.1x
a.) The 96 is what you start with from the beginning. So, we know Rachel weighed 96 ounces when she was born.
b.) Again, interpretation. The 2.1 is the slope, or the change in the line. So we know that Rachel gains 2.1 ounces each day.
30.) For this one, you just have to plug 9 into the equation for x.
