Solve the equation.10y = 7y + 7 + 2y
A. 70
B. 7
C. -70
D. -7
Answer: B
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Provide an appropriate response.A car owner took two trips. On the first, he traveled 390.6 miles using 12.4 gallons of gas; the second he traveled 354.2 miles using 11.5 gallons of gas. What was his average miles per gallon? Round to tenths.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The value V, in dollars, of a shopkeeper's inventory software program is given by 
where t is the number of years since the shopkeeper first bought the program. After how many years is the value of the software $40?
A. 10 yr B. 9 yr C. 7 yr D. 8 yr
Supply the missing numbers. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent.fractiondecimalpercent1
A.
| 1.287? | 128.7% |
B.
| 1.167? | 116.7% |
C.
| 1.167? | 11.67% |
D.
| 1.287? | 1287% |
After beginning antiseptic treatment, the number of bacteria in a population decreases at a rate of 12% per hour, that is, dN/dt = -0.12N, where N is the number of bacteria and t is the time, in hours.
a) When t = 0 , there are 100,000 bacteria present. Find a function that satisfies this equation (b) How many bacteria will remain after 8 hr? (c) After how long do half of the original bacteria remain?