Let f be a scalar field and F be a vector field. Indicate whether of the following is a scalar field, vector field, or meaningless.grad f
A. Scalar Field
B. Vector field
C. Meaningless
Answer: B
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Solve the problem.A study in a small town showed that the percent of residents who have college degrees can be modeled by the function 
where x is the number of years since 2005. According to the model, what percent of residents had a college degree in 2010? Round to the nearest whole number.
A. 63% B. 68% C. 73% D. 57%
Solve.The speed of a ball dropped from a tower is given by the linear function f(t) = 32t where f(t) is in feet per second and t is the number of seconds since the ball was dropped. Find the speed of the ball after 9 seconds.
A. 32 feet per second B. 278 feet per second C. 9 feet per second D. 288 feet per second
Simplify the expression. Assume that variables represent nonzero numbers.(53)5
A. 2515 B. 258 C. 58 D. 515
Find the sum of the arithmetic series using a formula.1 + 3 + 5 + ... + 511
A. 65,536 B. 65,025 C. 65,792 D. 66,049