Acrane is lowering a concrete block from a height of 270 feet above the ground at a constant rate 2.5 feet per second. which function can be used to determine h, the height, in feet, above the ground of the concrete block after 5 seconds?

First, we multiply 2.5 feet per second by the amount of seconds we are given.

2.5 * 5 = 12.5 feet

Now, let's subtract that number from 270 to find the height after 5 seconds.

270 - 12.5 = 257.5 feet above the ground.

After 5 seconds, the block is 257.5 feet above the ground.
Hope that helped!

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*