Solve.Sammy received a birthday check for $40.00 from his grandmother. He immediately cashed the check and went on a shopping spree. In three different stores he spent $13.44, $10.85, and $6.48, respectively. How much was left of the birthday money after these purchases?
A. $30.77
B. $10.23
C. $9.23
D. $9.53
Answer: C
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Use the division method to find the GCF of the pair of numbers. If the GCF is 1, write "relatively prime."9 and 54
A. 63 B. 486 C. 9 D. 54
Write the indicated expression.The price of Investor Growth mutual fund is 18% greater than the price of Investor Value mutual fund. Write an expression for the sum of Growth and Values mutual funds. Let n represent the Investor Value.
A. n + (n - 0.18n) B. n + 0.18n C. n + (n + 0.18n) D. 2n + (n + 0.18n)
Simplify the expression. Assume that all variables are positive when they appear.-2
- 7
A. -9
B. -23
C. 23
D. -19
Solve the problem.Sunlight is absorbed by water and so, as one descends into the ocean, the intensity of light diminishes. Suppose that at each depth, going down one more meter causes a 15% decrease in the intensity of sunlight.(a) Write the difference equation for yn, the intensity of the light at a depth of n meters.(b) If the intensity of the light at the surface is 500 units, what is the intensity of the light at a depth of two meters?(c) Graph the difference equation. 
What will be an ideal response?