Ali bought 2.15 pounds of turkey at $7.89 per pound, and 1.87 pounds of lamb at $7.89 per pound. which expression does not show the total cost, in dollars, of her purchase? clear check 4.02⋅7.89 7.89⋅2.15+1.87 7.89⋅(2.15+1.87) 7.89⋅2.15+7.89⋅1.87

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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.