Melanie spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -14.4°F. Between 9am and noon, the temperature increased by 14°F. Between noon and 3pm, the temperature increased by 18.3°F. Between 3pm and 6pm, the temperature went down 2.1°F. What was the temperature at 6pm?

we need more info to solve this

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

answer: there are 453.592 grams in a pound.