Ashopper purchased 8 t-shirts and 5 pairs of pants for $220. the next day he purchased 5 t-shirts and 1 pair of pants for $112. how much does each t-shirt and each pair of pants cost?

8t + 5p = 220
5t + p = 112multiply by -5

8t + 5p = 220
-25t - 5p = - 560 (results of multiplying by -5)
add
- 17t = - 340
t = 340/17
t = 20 <== each tee shirt costs $ 20

8t + 5p = 220
8(20) + 5p = 220
160 + 5p = 220
5p = 220 - 160
5p = 60
p = 60/5
p = 12 <== each pair of pants cost $ 12

1.   an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x =   cube root of 189 =   5.74   to nearest hundredth answer(b)   189 = 3*3*3*7   so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 =   756.48   which is very close(b)   4* ((3∛3)^3   = 4*189   = 756   - spot on! 3. i would use solution b because the original question asked for an exact solution.