Dally and marta had the same number of postcards. after sally sold 18 of her postcards, marta had 4 times as many postcards as sally. how many postcards did each girl have to begin with.

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?