Write the number in expanded form.78
A. (7 ? 100) + (8 ? 101)
B. (7 ? 101) + (8 ? 100)
C. (7 ? 101) + (8 ? 102)
D. (7 ? 102) + (8 ? 101)
Answer: B
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Solve.The altitude above sea level of an airplane just after taking off from an airport on a high plateau is modeled by the line of best-fit Height = 1000(Time) + 3679, where the height is in feet and time is in minutes since take-off. 9 minutes after take-off, a pilot observes the altitude of the plane. If the height residual is 100, what is the altitude of the plane?
A. 12,579 feet B. 9000 feet C. 12,679 feet D. 12,779 feet
Find the quotient. Assume all variables have positive values. Leave your answer in simplest form.
A. 9x2y3
B. 6x2y3
C. 9x2y3
D. 9x2y3
Solve the problem.Assume that a person's salary is $29,500 for the first year and that this person will receive a 4 percent raise at the end of each year. Let cn represent the person's salary (in thousands of dollars) for the nth year.i) Find a formula for cn.ii) When will the salary first be above $50,000?iii) What will be the person's salary for the 30th year?iv) What will be the total amount of money earned for 30 years?
What will be an ideal response?
Solve. Round to the nearest hundredth, if necessary.64 is 80% of what number?
A. 80 B. 51.2 C. 800 D. 8