Solve using both the addition and multiplication properties of equality.4x - 7 = 84 - 9x
A. x = - 
B. x = - 
C. x = -7
D. x = 7
Answer: D
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´ 9a2 Ã 2a ³6a2 + 3 - ÄÄÄ ³ = ’ 6a Å a. 12a3 + 6a + 3a2 b. 9a3 + 6a2 + 3a c. 9a3 - 3a2 - 6a d. 9a3 + 6a e. 12a3 - 3a2 + 6a
Translate the phrase into a subtraction problem. Then find the difference.26 subtracted from -9.
A. 35 B. -35 C. -17 D. 17
Solve the problem.The rate of change in the concentration of a drug with respect to time in a user's blood is given by
where D(t) is dosage at time t and k is the rate at which the drug leaves the bloodstream. If D(t) is a constant D, and 
solve the differential equation to find a formula for C(t), the concentration at time t.
A. C(t) = 
B. C(t) = 
C. C(t) = 
D. C(t) = 
Divide and simplify.
÷ 
A. 
B. -3
C. 3
D. 