Solve the problem by using two equations with two variables.An 8-cylinder SUV gives 18 miles per gallon in city driving and 21 miles per gallon in highway driving. A 300-mile trip required 15.5 gallons of gasoline. How many whole miles were driven in the city?
A. 153 miles
B. 132 miles
C. 168 miles
D. 147 miles
Answer: A
Mathematics
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Solve the formula for the specified variable.a + b = s + r for s
A. s = r(a + b)
B. s = 
+ b
C. s = 
D. s = a + b - r
Mathematics
Evaluate the integral.
csc2x dx
A. - 
B. 
C. 
D. - 
Mathematics
Graph the quadratic function. Identify the vertex and x-intercepts.y = x2 + 2x - 8
A. Vertex: (1, - 9);
x-intercepts: (-2, 0) and (4, 0)
B. Vertex: (- 1, - 9);
x-intercepts: (4, 0) and (2, 0)
C. Vertex: (1, - 9);
x-intercepts: (-2, 0) and (4, 0)
D. Vertex: (- 1, - 9);
x-intercepts: (-4, 0) and (2, 0)
Mathematics
Write the following number in exponential notation:
Mathematics