Combine like terms.-3(5r + 10) + 3(2r + 5)
A. -9r - 15
B. -45r
C. -9r + 10
D. 2r + 7
Answer: A
You might also like to view...
Find the product of the complex numbers. Leave answer in polar form.z1 = 5(cos 20° + i sin 20°)z2 = 4(cos 10° + i sin 10°)
A. 9(cos 30° + i sin 30°) B. 20(cos 200° + i sin 200°) C. 20(cos 30° + i sin 30°) D. 9(-cos 200° - i sin 200°)
Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.30% of what number is 96?
A. 3200 B. 28.8 C. 320 D. 32
For the given function expressed verbally, give a symbolic representation.To convert x square feet to y square yards, divide x by 9. Let y = f(x).
A. f(x) = x - 9 B. f(x) = 9/x C. f(x) = 9x D. f(x) = x/9
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.Find the magnitude (to one decimal place) of an earthquake whose seismographic reading is 2000 millimeters at a distance of 100 kilometers from its epicenter. Round the answer to the nearest tenth.
A. 6.3 B. 6.4 C. 5.9 D. 7.3