Ihave tried and tried and i can not solve these equations! numbers (the dashes are the numbers i need to solve for.) cost: - markup: - selling price: $79.49 % markup based on cost: 300% % markup based on selling price: - % markdown: 25% markdown: $19.87 sale price: $59.62 equations seling price= cost + markup % markup based on cost= markup ÷ cost % markup based on selling price= markup ÷ selling price % markdown= markdown ÷ selling price sale price= selling price - markdown i hope y'all can figure it !

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

What is the value of x in the diagram below?

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?