Ahmed worked all summer for a bee farmer. Ahmed was paid $400.00 the first week. The farmer paid a $50.00 raise per week for each additional week of employment. Ahmed worked on the bee farm for 8 weeks before his first year of university began.

Ive figured a and b but im confused with question c and d. 

a. Write out the first three weeks of earnings. Is this an arithmetic or geometric sequence? Justify

b. Calculate how much Ahmed earned over the 8 weeks of summer.

c. The money Ahmed earned over the summer was used for miscellaneous expenses at university. At the start of the ninth week of school he had $3 000.00 in his bank account. How much money did Ahmed spend each week?

d. The school year is approximately 32 weeks long. Will Ahmed have enough money if he continues to spend his savings at the same rate?

Determine the sum of the geometric series 2/3 + 4/3 + 8/3 +... + 128/3

the common ratio of a geometric series is 3 and the fifth term is 324. What is the value of the first term?

(2y²+3y-1)(y²+4y+5)

use distributive property

2y⁴+y³-10y-5

2y⁴⁺y³-10y-5

A technician prepares 500mL of a 0.3mol/L NH3 solution

whats the pH of NH3

A technician prepares 500mL of a 0.3mol/L NH3 solution

whats the pH of NH3

Aron is training for a 10 km marathon swim in 19 weeks.  Each week, his training plan includes a long distance swim.  In week six, Aron swam a total of 18.75 km.  In week ten, Aron swam a total of 36.25 km.  Each week, Aron increased the distance he swam following an arithmetic sequence until the final week.  In the last week, Aron only swam 5 km in order to save energy for the race. 

a. By what distance did Aron increase his total swimming each week?

b. Determine the distance Aron swam in the first week of training.

c. Determine how far Aron swam in the 18-week training program 

Math