Solve the problem.During a period of much rain, the water level in a river rose 4 inches each day for 2 straight days. How much higher was the river at the end of this period?
A. 6 inches
B. 8 inches
C. -8 inches
D. -6 inches
Answer: B
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?What is the best reason for lining up the decimal point when adding or subtracting decimal numbers? ?
A. ?In order to line-up the place-values of each digit. B. ?In order to line-up the decimal point. C. ?In order to follow the procedure of the addition/subtraction algorithm. D. ?You cannot perform the operation otherwise. E. ?So you can annex zeros when necessary.
Solve.3x + 7 = 7 (Approximate your answer to the nearest thousandth.)
A. x ? 1.410 B. x ? -0.477 C. x ? 7.565 D. x ? -5.229
Simplify. Assume that no denominator is zero and that 00 is not considered.(y + 1)5(y + 1)8
A. 2(y + 1)13 B. (y + 1)40 C. y13 + 113 D. (y + 1)13
Suppose a population of bacteria is changing at a rate of src="https://sciemce.com/media/2/ppg__cognero__Section_5.2__media__dbe1c3f4-3d34-4c8a-917b-02ae3602c3f4.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_96b3a422ae89416b8432b3864" /> days. Round your answer to the nearest integer.
?
A. 19,076
B. 9,611
C. 19,826
D. 8,859
E. 9,609
where t is the time in days. The initial population (when 
) is 1,500. Identify an equation that gives the population at any time t and use it to find the population when