Four different sets of objects contain 2, 3, 4, and 8 objects, respectively. How many unique combinations can be formed by picking one object from each set?

A. 93
B. 192
C. 289
D. 17

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

What expression is equivalent to 42x-56y