There were 8 inches of snow on the ground before the latest snowstorm. Once the storm started, the depth D, in inches, of snow on the ground satisfies the equation of change
.
Here t is measured in hours.A: Find a formula that gives the depth of snow t hours after the snow storm begins.B: Make a graph of depth versus time over the first 5 hours of the storm.C: How long will it take for the depth of the snow to reach 20 inches?
What will be an ideal response?
A: 
?
B:
?
?
C: 4 hours
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Provide an appropriate response.A student has noticed that every squared natural number is either a multiple of 4 or one larger than a multiple of 4, but isn't sure if this is always true. Use algebraic reasoning to explain to the student why this is always true.
What will be an ideal response?
Simplify the expression.9m3 + 9m3
A. 19m3 B. 18m3 C. 18m6 D. 19m6
Solve. Round to the nearest tenth if necessary.Ms. Robert was not able to sell her house for $85,000, so she lowered the price to 
. What was the percent decrease?
A. 6.3% B. 94.1% C. 5.9% D. 1600%
Solve.A pendulum bob swings through an arc 50 inches long on its first swing. Each swing thereafter, it swings only 89% as far as on the previous swing. What is the length of the arc after 11 swings? Round your answer to two decimal places, if necessary.
A. 13.88 inches B. 15.59 inches C. 12.35 inches D. 445 inches