Atriangle on a coordinate plane is translated according to the rule t–8, 4(x, y). which is another way to write this rule?

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Problem solving 1.) given the sequence : 150 , 275 , 400 , 525 , , finda. the 10th termb. the 15th termc. the sum of terms from the 5th to the 12th inclusive. 2.) the first term of an arithmetic progression is -10 and the last term is 35. if the common difference is 3 , a. find the number of terms in the sequence , and b. calculate the sum of all the terms.​

Vertex of the parabola by y=2x+4x-5​