Solve the problem by estimating.Don traveled for 4 weeks in Africa last year and spent $2421 while he was there. Estimate the average amount he spent each day. Round the number of days to the to the nearest ten and the amount of money spent to the nearest hundred.
A. $800
B. $80
C. $700
D. $70
Answer: B
Mathematics
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 8 sin t - cos tFind the body's velocity at time t = ?/4 sec.
A. 
m/sec
B. - 
m/sec
C. 
m/sec
D. - 
m/sec
Mathematics
Provide an appropriate response.Solve the following quadratic equation: 3x2 = x
Fill in the blank(s) with the appropriate word(s).
Mathematics
For the function f, construct and simplify the difference quotient 
.f(x) = 
A. 
B. 
C. 0
D. 
Mathematics
Solve the problem.Find the number of 3-digit numbers that can be written using the digits {3, 5, 7, 9}.a. if the digits can be repeated.b. if the digits cannot be repeated.
A. a. 24 b. 64 B. a. 64 b. 24 C. a. 64 b. 6 D. a. 81 b. 24
Mathematics