A teacher asked her pupils what their favourite school subject was 3 pupils said PE was their favourite subject how many pupils said Maths was there favourite subject?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.

Julie multiplies 6.27 by 7 and claims the product is 438.9 .explain without multiplying how you know juliesanswer is not correct.find the correct answer